Fuel pump assembly of sleigh car

Abstract

The utility model discloses a fuel pump assembly of a sleigh car, which relates to the technical field of fuel pumps, and comprises a flange plate assembly, an oil storage barrel, a fuel pump, a diffraction pump, an oil taking joint and a corrugated pipe assembly, the flange plate assembly is connected with one end of the oil storage barrel, the fuel pump is arranged in the oil storage barrel, and the diffraction pump is arranged in the oil taking joint. The other end of the oil storage barrel is provided with the diffraction pump, the diffraction pump is provided with an upper oil suction port and a lower oil suction port, and the corrugated pipe assembly is connected with the flange plate assembly, the fuel oil pump, the oil taking connector and the lower oil suction port. The diffraction pump component is of a double-diffraction oil suction port structure, a lower oil suction port of the diffraction pump sucks fuel oil at the near end of the oil tank through an oil suction port in the bottom of the oil storage barrel, an upper oil suction port of the diffraction pump is connected with an oil taking connector through a corrugated pipe, far-end fuel oil is sucked at the far end of the oil tank, and therefore it is guaranteed that the fuel oil in the oil storage barrel is in an overflow state; and stable oil supply under various working conditions is realized.

Description

Technical Field

[0001] The utility model relates to the technical field of fuel pumps, in particular to a fuel pump assembly for a snowmobile. Background Art

[0002] A snowmobile is a vehicle used for traveling on snowy terrain, moving via rotating tracks and not requiring a specific path. Snowmobiles are typically powered by an internal combustion engine, and the fuel pump assembly primarily pumps fuel from the fuel tank, pressurizes it, and delivers it to the engine. However, due to structural limitations, the fuel tank structure is complex. Furthermore, snowmobiles often operate on poor terrain, making it prone to fuel leakage to one end when climbing or descending hills or when the fuel tank is low. Existing snowmobile fuel pump assemblies typically feature a single-port intake port, which only draws fuel from either the near or far end of the tank, resulting in a lack of fuel in the tank. Furthermore, the fuel tank and fuel pump assembly are typically welded together. This method involves first welding the fuel pump assembly to the upper tank shell and then welding the upper and lower shells together. This welding method is costly and prevents disassembly in the event of a fuel pump failure, leading to high replacement and maintenance costs. Utility Model Content

[0003] The purpose of the utility model is to provide a snowmobile fuel pump assembly for solving the above technical problems.

[0004] The technical solutions adopted in this utility model are as follows:

[0005] A fuel pump assembly for a snowmobile includes a flange assembly, an oil storage barrel, a fuel pump, a diffraction pump, an oil extraction joint, and a bellows assembly. The flange assembly is connected to one end of the oil storage barrel, the fuel pump is installed in the oil storage barrel, and the other end of the oil storage barrel is provided with the diffraction pump. The diffraction pump has an upper oil suction port and a lower oil suction port. The bellows assembly connects the flange assembly, the fuel pump, the oil extraction joint, and the lower oil suction port.

[0006] Preferably, the flange assembly includes a flange, and the flange is provided with an oil outlet, a pressure regulating valve and an electrical connector, and the pressure regulating valve is provided on one side of the electrical connector.

[0007] As a further preference, the bellows assembly includes a first bellows, a second bellows, a third bellows, a fourth bellows and a fifth bellows, the two ends of the first bellows are connected to the oil outlet and the fuel pump, the two ends of the second bellows are connected to the diffraction pump and the fuel pump, the two ends of the third bellows and the fourth bellows are connected to the diffraction pump and the oil storage tank respectively, and the two ends of the fifth bellows are connected to the upper oil suction port and the oil extraction joint.

[0008] As a further preference, three slots are opened on the outer wall of the oil storage barrel, and the second bellows, the third bellows and the fourth bellows are arranged in the corresponding slots.

[0009] Preferably, the system further comprises a fuel pump bracket and a coarse filter assembly, wherein the fuel pump is mounted on the fuel pump bracket, and the coarse filter assembly is mounted on one end of the fuel pump bracket.

[0010] As a further preference, it further includes a cable tie, and the fuel pump bracket is installed in the oil storage barrel through the cable tie.

[0011] As a further preference, it further includes an oil level sensor and a float rod component, the oil level sensor is arranged on the outer wall of the oil storage barrel, the float rod component is connected to the oil level sensor, and the oil level sensor is connected to the electrical plug.

[0012] The above technical solution has the following advantages or beneficial effects:

[0013] In the utility model, the diffraction pump component has a double diffraction oil suction port structure. The lower oil suction port of the diffraction pump draws fuel from the near end of the fuel tank through the oil suction port at the bottom of the oil storage barrel. The upper oil suction port of the diffraction pump is connected to an oil extraction joint through a bellows to draw fuel from the far end of the fuel tank, thereby ensuring that the fuel in the oil storage barrel is in an overflow state and achieving stable oil supply under various working conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 This is a schematic structural diagram of the fuel pump assembly of the snowmobile in the present invention;

[0015] Figure 2 This is a front view of the fuel pump assembly of the snowmobile in the present invention;

[0016] Figure 3 yes Figure 2 Middle AA section view;

[0017] Figure 4 It is a structural schematic diagram of the oil storage barrel in the utility model.

[0018] In the figure: 1. Oil storage tank; 2. Fuel pump; 3. Diffraction pump; 4. Oil tap; 5. Flange; 6. Oil outlet; 7. Pressure regulating valve; 8. Electrical connector; 9. First bellows; 10. Second bellows; 11. Third bellows; 12. Fourth bellows; 13. Fifth bellows; 14. Slot; 15. Fuel pump bracket; 16. Coarse filter assembly; 17. Cable tie; 18. Oil level sensor; 19. Float rod assembly; 20. Buckle; 21. Mounting part; 22. Pressure regulating valve clamp. DETAILED DESCRIPTION

[0019] The following is a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings. Obviously, the embodiments described are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making any creative efforts are within the scope of protection of the present invention.

[0020] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer" and the like are used to indicate positions or locations based on those shown in the accompanying drawings. These terms are intended solely to facilitate the description of this utility model and to simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third" are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0021] In the description of this utility model, it should be noted that, unless otherwise expressly specified or limited, the terms "mounted," "connected," and "connected" should be understood in a broad sense. For example, they can refer to fixed connection, detachable connection, or integral connection; mechanical connection, electrical connection; direct connection, indirect connection through an intermediate medium, or internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in this utility model based on the specific circumstances.

[0022] Figure 1 This is a schematic structural diagram of the fuel pump assembly of the snowmobile in the present invention; Figure 2 This is a front view of the fuel pump assembly of the snowmobile in the present invention; Figure 3 yes Figure 2 Middle AA section view; Figure 4 This is a schematic diagram of the structure of the oil storage barrel in this utility model, please see Figures 1 to 4The figure shows a preferred embodiment of a snowmobile fuel pump assembly, comprising a flange assembly, an oil reservoir 1, a fuel pump 2, a diffraction pump 3, an oil extraction connector 4, and a bellows assembly. The flange assembly is connected to one end of the oil reservoir 1, with the fuel pump 2 installed within the oil reservoir 1. The diffraction pump 3 is provided at the other end of the oil reservoir 1 and has an upper and lower oil suction ports. The bellows assembly connects the flange assembly, the fuel pump 2, the oil extraction connector 4, and the lower oil suction port. In this embodiment, the flange assembly adopts the existing structure and includes a flange 5, which is provided with an oil outlet 6, a pressure regulating valve 7, and an electrical connector 8. The pressure regulating valve 7 is located on one side of the electrical connector 8. One end of the oil reservoir 1 is connected to the flange 5 by bolts. The back of the flange 5 tightly engages the oil reservoir 1 to form a sealing surface, which can maximize the volume of the oil reservoir 1, thereby achieving excellent driving endurance under extreme conditions (low fuel level and long uphill / downhill driving). The diffraction pump 3 is a double diffraction oil suction port structure, which can suck the fuel from the near end and the far end of the fuel tank into the oil storage barrel 1 and the fuel pump 2, thereby ensuring that the fuel in the oil storage barrel 1 is in an overflow state and achieving stable fuel supply under various working conditions. Figure 4 As shown, the other end of the oil storage tank 1 is provided with a mounting portion 21 for mounting the diffraction pump 3. The diffraction pump 3 and the oil storage tank 1 form a hard connection seal. Compared with other rubber connection seal structures, this sealing method is simpler and more reliable to assemble, and significantly reduces costs. The electrical connector 8 can be connected to an external controller, such as a PLC controller, and the pressure regulating valve 7, fuel pump 2, and diffraction pump 3 can all be connected to the electrical connector 8. The pressure regulating valve 7 is connected to the fuel pump 2 to control the pressure at the fuel pump 2's oil outlet 6. The operation of the fuel pump 2, diffraction pump 3, and pressure regulating valve 7 can be controlled by the controller. Figure 1 As shown, the pressure regulating valve 7 can be mounted on the flange 5 by clamping the pressure regulating valve 7 .

[0023] Furthermore, as a preferred embodiment, the bellows assembly includes a first bellows 9, a second bellows 10, a third bellows 11, a fourth bellows 12 and a fifth bellows 13. The two ends of the first bellows 9 are connected to the oil outlet 6 and the fuel pump 2, the two ends of the second bellows 10 are connected to the diffraction pump 3 and the fuel pump 2, the two ends of the third bellows 11 and the fourth bellows 12 are connected to the diffraction pump 3 and the oil storage tank 1 respectively, and the two ends of the fifth bellows 13 are connected to the upper oil suction port and the oil extraction joint 4. The first bellows 9 is connected to the fuel pump 2 and the fuel outlet 6, allowing the fuel pump 2 to deliver fuel to the fuel outlet 6. The diffraction pump 3 can pump fuel into the fuel pump 2 through the second bellows 10. The diffraction pump 3 can pump fuel from the fuel pump 2 into the fuel tank 1 through the third bellows 11 and the fourth bellows 12. The oil extraction connector 4 is used to draw fuel from the far end of the fuel tank. The lower oil suction port on the diffraction pump 3 can penetrate the mounting portion 21 to draw fuel from the near end of the fuel tank. This arrangement can ensure that the fuel in the fuel tank 1 is in an overflow state. The bellows can be connected to each component by threaded connection.

[0024] Furthermore, as a preferred embodiment, three slots 14 are provided on the outer wall of the oil storage barrel 1, and the second bellows 10, the third bellows 11 and the fourth bellows 12 are arranged in the corresponding slots 14. Figure 4 As shown, the second bellows 10 , the third bellows 11 and the fourth bellows 12 are respectively clamped in a clamping groove 14 , so as to fix the second bellows 10 , the third bellows 11 and the fourth bellows 12 .

[0025] Furthermore, as a preferred embodiment, a fuel pump bracket 15 and a coarse filter assembly 16 are included. The fuel pump 2 is mounted on the fuel pump bracket 15, and the coarse filter assembly 16 is mounted at one end of the fuel pump bracket 15. The coarse filter assembly 16 is mounted below the fuel pump 2 and connected to the fuel pump bracket 15 via a snap 20 to prevent the fuel pump 2 from being removed. The coarse filter assembly 16 can be bolted to the interior of the fuel tank 1, and the fuel pump 2 is positioned within the fuel pump bracket 15. The coarse filter assembly 16 is a conventional structure and will not be limited here.

[0026] Furthermore, as a preferred embodiment, it further comprises a cable tie 17, and the fuel pump bracket 15 is installed in the fuel tank 1 through the cable tie 17. Figure 3 As shown, holes are provided on the sidewalls of the fuel tank 1 for threading cable ties 17. Cable ties 17 are used to secure the fuel pump bracket 15 to the inner wall of the fuel tank 1. The number of cable ties 17 can be adjusted as needed. In this embodiment, after the fuel pump bracket 15 is connected to the coarse filter assembly 16 via the snap 20, the cable ties 17 are further secured.

[0027] Furthermore, as a preferred embodiment, an oil level sensor 18 and a float rod assembly 19 are further included. The oil level sensor 18 is disposed on the outer wall of the oil storage barrel 1. The float rod assembly 19 is connected to the oil level sensor 18, and the oil level sensor 18 is connected to the electrical connector 8. In this embodiment, the float rod assembly 19 is conventional and will not be limited here. A buckle 20 may be disposed on the outer wall of the oil storage barrel 1, and a slot may be disposed on the outer wall of the oil level sensor 18 for engaging with the buckle 20 to mount the oil level sensor 18 on the outer wall of the oil storage barrel 1.

[0028] In this embodiment, the outer wall of the flange 5 may be provided with external threads for cooperating with the mounting thread on the fuel tank, thereby enabling quick disassembly and assembly between the fuel pump 2 assembly and the fuel tank.

[0029] During use, the flange 5 is installed at the installation port at the upper end of the fuel tank. At this time, the oil storage barrel 1 is located in the fuel tank. Then the oil outlet 6 on the flange 5 is connected to the external equipment. The diffraction pump 3 and the fuel pump 2 are controlled by the controller. The diffraction pump 3 can suck the fuel at the near end and the far end of the fuel tank into the fuel pump 2 and the oil storage barrel 1, so that the fuel in the oil storage barrel 1 is in an overflow state, thereby achieving stable oil supply under various working conditions. The float rod component 19 cooperates with the oil level sensor 18 to detect the fuel level in the fuel tank and feed it back to the external controller.

[0030] The above description is only a preferred embodiment of the present invention and does not limit the implementation method and protection scope of the present invention. For those skilled in the art, it should be aware that all solutions obtained by equivalent substitutions and obvious changes made using the description and illustrations of the present invention should be included in the protection scope of the present invention.

Claims

1. A snowmobile fuel pump assembly, characterized in that: It includes a flange assembly, an oil storage barrel, a fuel pump, a diffraction pump, an oil extraction joint and a bellows assembly. The flange assembly is connected to one end of the oil storage barrel, the fuel pump is installed in the oil storage barrel, and the other end of the oil storage barrel is provided with the diffraction pump. The diffraction pump has an upper oil suction port and a lower oil suction port. The bellows assembly connects the flange assembly, the fuel pump, the oil extraction joint and the lower oil suction port.

2. The snowmobile fuel pump assembly according to claim 1, wherein: The flange assembly comprises a flange, on which an oil outlet, a pressure regulating valve and an electrical connector are arranged, and the pressure regulating valve is arranged on one side of the electrical connector.

3. The snowmobile fuel pump assembly according to claim 2, wherein: The bellows assembly includes a first bellows, a second bellows, a third bellows, a fourth bellows and a fifth bellows. The two ends of the first bellows are connected to the oil outlet and the fuel pump, the two ends of the second bellows are connected to the diffraction pump and the fuel pump, the two ends of the third bellows and the fourth bellows are connected to the diffraction pump and the oil storage tank respectively, and the two ends of the fifth bellows are connected to the upper oil suction port and the oil extraction joint.

4. The snowmobile fuel pump assembly according to claim 3, wherein: Three slots are provided on the outer wall of the oil storage barrel, and the second bellows, the third bellows and the fourth bellows are arranged in the corresponding slots.

5. The snowmobile fuel pump assembly according to claim 1, wherein: The invention also comprises a fuel pump bracket and a coarse filter assembly, wherein the fuel pump is mounted on the fuel pump bracket, and the coarse filter assembly is mounted on one end of the fuel pump bracket.

6. The snowmobile fuel pump assembly according to claim 5, wherein: It also includes a cable tie, and the fuel pump bracket is installed in the oil storage barrel through the cable tie.

7. The snowmobile fuel pump assembly according to claim 2, wherein: It also includes an oil level sensor and a float rod component. The oil level sensor is arranged on the outer wall of the oil storage barrel. The float rod component is connected to the oil level sensor, and the oil level sensor is connected to the electrical plug.

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